> 数学 >
化简(3+1)(32+1)(34+1)(38+1)得(  )
A. (38+1)2
B. (38-1)2
C. 316-1
D.
1
2
(316−1)
人气:195 ℃ 时间:2020-03-29 06:59:12
解答
(3+1)(32+1)(34+1)(38+1)
=
1
2
(3-1)(3+1)(32+1)(34+1)(38+1)
=
1
2
(32-1)(32+1)(34+1)(38+1)
=
1
2
(34-1)(34+1)(38+1)
=
1
2
(38-1)(38+1)
=
1
2
(316−1)

故选D.
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